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45 votes
45 votes
Help mee pleaseeee!!!!!!!!!!!!!!!!!!!!!!!!




thank youuu

Help mee pleaseeee!!!!!!!!!!!!!!!!!!!!!!!! thank youuu-example-1
User Aditya Gupta
by
2.8k points

1 Answer

24 votes
24 votes

Answer:

8.29 s

Explanation:

Well, when the pebble hits the ground, h = 0

so 0 = -16t^2 +24t + 900

Use quadratic Formula with a = -16 b = 24 and c = 900

to find t = 8.29 seconds

(ignore the negative value that the Quad Formula computes)

User Marcel Hebing
by
3.2k points
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